Electric power overhead line crossing railway line protection device linked with railway track car

Abstract

The invention relates to the field of electric power overhead line construction protection, in particular to an electric power overhead line crossing railway line protection device linked with a railway track car, which comprises a cylindrical shell, a fixed rod is fixedly arranged on the shell along the radial direction of the shell, and a plurality of rotating rods are arranged on the shell around the axis of the shell. A bearing net is fixedly arranged between the fixed rod and one of the adjacent rotating rods, the bearing net is of a fan-shaped structure, a bearing net is also arranged between the two adjacent rotating rods, and after the rotating rods rotate and unfold, all the bearing nets form a circular bearing surface for bearing the power overhead line. Clamping rods are obliquely and fixedly arranged at the end, away from the shell, of the rotating rod, and pressure sensors are arranged on the upper portion of the rotating rod and the upper portion of the fixed rod. According to the invention, the laying speed of the protection device is improved, the workload is reduced, and the safety of the periphery of the railway line is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power overhead line construction protection, in particular to a power overhead line crossing railway line protection device linked with a railway track vehicle. BACKGROUND

[0002] In the process of erecting the wire, the operator may be electrically shocked due to the negligence of the operator using the equipment, so a protection device needs to be used for protection when erecting the wire. However, the existing protection device does not have a shielding function for the wire, is not convenient for guiding the wire, and does not have a function of leading out the short-circuit wire.

[0003] Chinese Patent No. CN211981439U discloses a protection device for power transmission line erection to solve the problem that the existing protection device for power transmission line erection does not have a shielding function for the power transmission line, is not convenient for guiding the power transmission line, and does not have a function of leading out the short-circuit wire on the protection net. A protection device for power transmission line erection includes a wire pole, a protection support, a protection frame reinforcing rod, a connecting rope, a protection electrically conductive frame structure, an upper support, a support reinforcing rod, an auxiliary guide frame structure, a power transmission line, a convenient disassembly limiting frame structure, a fixed bottom plate, a reinforcing plate, a bolt hole, a mounting bolt, a rubber sleeve, and the fixed bottom plate is welded to the lower part of the wire pole; the reinforcing plate is welded to the angle between the fixed bottom plate and the wire pole; the bolt hole is provided at the four corners of the fixed bottom plate; the mounting bolt is inserted into the inside of the bolt hole; the rubber sleeve is sleeved on the outside upper part of the mounting bolt; the protection support is bolted to the middle upper part of the wire pole on both sides; the protection frame reinforcing rod is bolted to the lower connection between the wire pole and the protection support; the connecting rope is bolted to the inside of the protection support; the protection electrically conductive frame structure is installed on the connecting rope; the upper support is bolted to the upper part of the wire pole on both sides; the support reinforcing rod is bolted to the lower connection between the upper support and the wire pole; the auxiliary guide frame structure is installed on the upper end of the wire pole and the upper part of the upper support respectively; the convenient disassembly limiting frame structure is installed on the outside of the power transmission line; the convenient disassembly limiting frame structure includes a semicircular fixed hoop, a side edge ear plate, a side edge limiting block, a locking bolt, and a locking nut, the side edge ear plate is welded to the front and rear ends of the semicircular fixed hoop; and the locking nut is arranged on the upper side of the side edge ear plate.

[0004] The above scheme facilitates the guidance of the electric wire and provides guidance for the electric wire as well, however, in the scenarios of railway construction, maintenance and related power facility construction, the situation of the power transmission line of the State Grid crossing the railway line is common. When the two cross in space, if there is lack of effective protection measures, it is easy to cause safety accidents and cause serious consequences. In the construction process, due to various factors such as non-standard construction operation, equipment failure, adverse weather influence and the like, the power transmission line of the State Grid has the risk of falling and damaging the railway line and its auxiliary facilities such as the contact net. Once the power transmission line falls, it may cause the failure of the railway traction power supply system, affect the train operation, and further cause major accidents such as train delay and stop, seriously threatening the railway transportation order, and there is no device in the prior art that can solve the above problems. SUMMARY

[0005] In view of the above problems, the power overhead line crossing railway line protection device linked with the railway track vehicle is provided, a plurality of rotatable rotating rods are arranged on the shell, and the protection device is arranged on the railway track vehicle. When the protection device needs to be erected, the railway track vehicle is moved to a specified position, then the rotating rods are rotated and unfolded, and then the circular receiving surface is formed, thereby improving the efficiency of laying the protection device and reducing the workload. When the power overhead line falls on the circular receiving surface, the pressure sensor arranged on the fixed rod and the rotating rod can detect the pressure, then the rotating rod is quickly reset and retracted, and the clamping rod at the end of the rotating rod can clamp the power overhead line falling on the circular receiving surface, thereby avoiding the situation that the power overhead line falls and slides on the protection device.

[0006] To solve the problems in the prior art, the power overhead line crossing railway line protection device linked with the railway track vehicle is provided, and the protection device is arranged on the railway track vehicle. The protection device includes a cylindrical shell, a fixed rod is fixedly arranged on the shell in the radial direction of the shell, a plurality of rotating rods are arranged on the shell around the axis of the shell, a receiving net is fixedly arranged between the fixed rod and one of the adjacent rotating rods, the receiving net has a fan-shaped structure, and a receiving net is also arranged between the two adjacent rotating rods. When the rotating rods are rotated and unfolded, all the receiving nets form a circular receiving surface for receiving the power overhead line. The end of the rotating rod away from the shell and the end of the rotating rod away from the shell are both fixedly arranged with a clamping rod for clamping the falling power overhead line. The rotating rod and the fixed rod are both provided with a pressure sensor on the upper part.

[0007] Preferably, a driving unit for driving the rotating rod to rotate is arranged on the shell, the driving unit includes a rotating disc rotatably arranged on the upper part of the shell along the axis of the shell, a driving rod fixedly arranged between the upper part of the rotating disc and the rotating rod and fixedly connected with the two, and a rotary driver arranged on the lower part of the rotating disc for driving the rotating disc to rotate.

[0008] Preferably, a guide ring is arranged on the periphery of the shell, an arc-shaped slot is arranged on the guide ring around the axis of the guide ring, and the end of the rotating rod extends into the arc-shaped slot and is in sliding fit with the arc-shaped slot.

[0009] Preferably, a pre-tightening unit is arranged below the rotating disc, the pre-tightening unit comprises a pre-tightening ring arranged below the rotating disc in rotation along the axis of the shell, a connecting assembly is arranged between the pre-tightening ring and the rotating disc, the pre-tightening ring drives the rotating disc to reset in rotation through the connecting assembly, a torsional spring is arranged below the pre-tightening ring to provide a reset torque for the pre-tightening ring, and a locking unit is arranged on one side of the rotating disc to limit the rotation of the rotating disc.

[0010] Preferably, the connecting assembly comprises a plurality of first one-way teeth arranged uniformly on the lower part of the rotating disc around the axis of the rotating disc, a plurality of second one-way teeth are arranged on the upper part of the pre-tightening ring around the axis of the pre-tightening ring, and the first one-way teeth and the second one-way teeth are in one-way engagement.

[0011] Preferably, the pre-tightening unit further comprises a pre-tightening shell in an annular structure, the pre-tightening shell rotates along the axis of the shell, the pre-tightening ring rotates synchronously with the pre-tightening shell, and the pre-tightening ring is arranged vertically in the pre-tightening shell, a spring is arranged vertically between the pre-tightening ring and the bottom of the pre-tightening shell, and the two ends of the spring are fixedly connected with the pre-tightening ring and the bottom of the pre-tightening shell respectively.

[0012] Preferably, a groove is vertically arranged on the bottom of the rotating disc, a connecting shaft is vertically movably arranged in the shell and is in plug fit with the groove, the horizontal section of the connecting shaft is in non-circular structure, and the connecting shaft vertically penetrates the pre-tightening shell and is in sliding fit with the pre-tightening shell.

[0013] Preferably, a sliding groove is vertically arranged on the lower part of the connecting shaft, a driving shaft is fixedly arranged on the output end of the rotary driver, the driving shaft extends into the sliding groove and is in sliding fit with the sliding groove in the vertical direction, and the driving shaft rotates synchronously with the connecting shaft.

[0014] Preferably, a lifting ring is movably arranged in the vertical direction on the lower part of the connecting shaft to support the connecting shaft, the lifting ring can only move in the vertical direction, the lifting ring is in rotation fit with the connecting shaft, and a linear driver is vertically arranged on the lower part of the lifting ring to drive the lifting ring to move.

[0015] Preferably, the locking unit comprises a locking rod movably arranged in the radial direction, the locking rod is driven by hydraulic pressure, a locking slot is arranged on the peripheral wall of the rotating disc in the radial direction of the rotating disc, and the locking slot is in plug fit with the locking rod.

[0016] The beneficial effects of the present application compared with the prior art are:

[0017] 1. The application sets multiple rotatable rotating rods on the shell, and sets the protective device on the railway track vehicle, moves the railway track vehicle to the specified position when the protective device needs to be erected, then makes the rotating rod rotate and expand, and then forms a circular receiving surface, improves the efficiency of the protective device, reduces the workload, and when the overhead power line falls on the circular receiving surface, the pressure sensor arranged on the fixed rod and the rotating rod can detect the pressure, then the rotating rod quickly resets and shrinks, and the clamping rod at the end of the rotating rod can clamp the overhead power line falling on the circular receiving surface, avoiding the situation that the overhead power line slips off the protective device after falling on it. In summary, the application improves the erection speed of the protective device, reduces the workload, and avoids the overhead power line from slipping off when it falls on the protective device, ensuring the safety of the surrounding railway line.

[0018] 2. Since the rotating speed of the rotating rod needs to be fast during resetting, when the rotating rod resets and rotates, the starting running speed of the rotary driver is required to be high, but after the clamping rod clamps the overhead power line, the rotary driver is easy to continue running, which causes the overhead power line to be damaged by the clamping rod. The torsional spring provides torsional force for the pre-tightening ring, and the connecting assembly is arranged between the pre-tightening ring and the rotating disc, so that when the pressure sensor is triggered, the locking unit unlocks the rotating disc, the pre-tightening ring is driven to rotate by the torsional spring in the pre-tightening state, and then the rotating disc rotates, finally the rotating rod rotates and shrinks. During the rotating and shrinking process of the rotating rod, the overhead power line can be clamped by the clamping rod, and after clamping, the clamping force of the clamping rod on the overhead power line does not continue to increase, avoiding the situation that the clamping rod damages the overhead power line when clamping it. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a top view of the application and the railway track vehicle linkage electric power line across the railway line protective device set on the railway track vehicle for operation.

[0020] Figure 2 is a perspective view of the application and the railway track vehicle linkage electric power line across the railway line protective device.

[0021] Figure 3 is a perspective view of the application and the railway track vehicle linkage electric power line across the railway line protective device. Figure 2 is a partial enlarged view of A in the application and the railway track vehicle linkage electric power line across the railway line protective device.

[0022] Figure 4 is a side view of the application and the railway track vehicle linkage electric power line across the railway line protective device.

[0023] Figure 5It is the protection device of the power overhead line across the railway line of the invention and the railway track car linkage Figure 4 The cross-sectional view of B-B in the figure.

[0024] Figure 6 It is the protection device of the power overhead line across the railway line of the invention and the railway track car linkage Figure 5 The local enlarged view of C in the figure.

[0025] Figure 7 It is the protection device of the power overhead line across the railway line of the invention and the railway track car linkage Figure 5 The local enlarged view of D in the figure.

[0026] Figure 8 It is the cross-sectional view of the protection device of the power overhead line across the railway line of the invention and the railway track car linkage.

[0027] Figure 9 It is the protection device of the power overhead line across the railway line of the invention and the railway track car linkage

[0028] Figure 10 It is the protection device of the power overhead line across the railway line of the invention and the railway track car linkage

[0029] Figure 11 It is the protection device of the power overhead line across the railway line of the invention and the railway track car linkage

[0030] The figure label is:

[0031] 1, the shell; 11, the fixed rod; 12, the rotating rod; 13, the clamping rod; 14, the receiving net; 15, the driving unit; 151, the driving rod; 152, the rotating disc; 1521, the groove; 1522, the connecting shaft; 1523, the sliding groove; 1524, the driving shaft; 1525, the lifting ring; 1526, the linear driver; 153, the rotary driver; 154, the guide ring; 1541, the arc-shaped slot; 16, the pre-tightening unit; 161, the pre-tightening ring; 162, the torsional spring; 163, the connecting assembly; 1631, the first one-way tooth; 1632, the second one-way tooth; 164, the pre-tightening shell; 165, the spring; 17, the locking unit; 171, the locking rod; 2, the power overhead line; 3, the railway track car. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means and specific purposes and functions of the present application, the present application will be described in detail below in combination with the drawings and specific embodiments.

[0033] Referring to Figures 1-4 and Figure 9 : the power overhead line crossing railway line protection device is arranged on the railway track 3; the protection device includes a cylindrical shell 1, a fixed rod 11 is fixedly arranged on the shell 1 in the radial direction of the shell 1, a plurality of rotating rods 12 are arranged on the shell 1 around the axis of the shell 1, a receiving net 14 is fixedly arranged between the fixed rod 11 and its adjacent one of the rotating rods 12, the receiving net 14 is in a fan-shaped structure, the receiving net 14 is also arranged between the adjacent two rotating rods 12, after the rotating rods 12 are unfolded, all the receiving nets 14 form a circular receiving surface for receiving the power overhead line 2, the end of the rotating rod 12 away from the shell 1 and the end of the rotating rod 12 away from the shell 1 are both fixedly arranged with a clamping rod 13 for clamping the falling power overhead line 2, and a pressure sensor is arranged on the upper part of the rotating rod 12 and the fixed rod 11.

[0034] In the scenarios of railway construction, maintenance and related power facility construction, the situation of state grid transmission line crossing railway line is common. As an important national transportation infrastructure, the railway bears a large number of transportation tasks of personnel and materials, and its safety and stability are crucial; and the state grid transmission line is the key to guarantee power supply, and provides indispensable electric energy for various fields of national economy and residents' life. When the two cross in space, if there is lack of effective protection measures, it is easy to cause safety accidents and cause serious consequences. In the construction process, due to various factors such as non-standard construction operation, equipment failure, adverse weather influence and the like, the state grid transmission line has the risk of falling damage to the railway line and its auxiliary facilities such as the contact net. Once the transmission line falls, it may cause the railway traction power supply system to fail, affect train operation, and then cause major accidents such as train delay and shutdown, and seriously threaten the railway transportation order. In order to solve the above problems, a protective device is arranged on the existing railway track car 3, so that when the power overhead line 2 crosses the railway line, the railway track car 3 moves to the intersection position of the power overhead line 2 and the railway line, and the protective device arranged on the railway track car 3 can provide protection for the railway line, so as to avoid the power overhead line 2 from accidentally falling into the railway line during construction. The existing protective device is mainly a net structure, which is erected when protection is needed, so that the net structure is located below the power overhead line 2. However, the workload is large and the erection time is long every time the net structure is erected. At the same time, when the power overhead line 2 falls, although the protective device can provide support for the power overhead line 2, it cannot avoid the situation that the power overhead line 2 slides off the protective device. Although it can avoid the power overhead line 2 from falling into the railway line, the power overhead line 2 will appear to be hanging down after sliding off the protective device, which will cause a large safety hazard if there is a motor lane around the railway line.

[0035] In order to avoid the above situation, the existing protective device is redesigned, so that the protective device can be unfolded during use, and when the power overhead line 2 falls on the protective device, the unfolded protective device can immediately shrink and clamp the power overhead line 2 falling on the protective device, avoiding the situation that the power overhead line 2 slides off the protective device after falling. The specific structure and working process of the present application are as follows:

[0036] Before use, the railway track vehicle 3 moves to the junction of the overhead power line 2 and the railway line. Then, the rotating rods 12 set around the outer shell 1 rotate. Before rotation, the rotating rods 12 are close to each other, and the supporting net 14 between adjacent rotating rods 12 is folded. The supporting net 14 between the fixed rod 11 and its adjacent rotating rod 12 is also folded. When the rotating rods 12 rotate, the rotating rods 12 adjacent to the fixed rod 11 start to rotate first. There is no supporting net 14 between the rotating rods 12 and the fixed rod 11. Since the length of the supporting net 14 is limited, when the rotating rod 12 rotates one revolution and contacts the fixed rod 11, all the supporting nets 14 are unfolded. All the supporting nets 14 together form a circular supporting surface. The circular supporting surface can block the overhead railway line, ensuring that the overhead power line 2 will not fall into the railway line when crossing the railway line. It is worth noting that inclined clamping rods 13 are fixedly installed at the ends of both the fixed rod 11 and the rotating rod 12, and pressure sensors are installed on the upper parts of both the fixed rod 11 and the rotating rod 12. The pressure sensors are used to detect the pressure generated when the overhead power line 2 falls. When the pressure sensor detects the pressure, the rotating rod 12, which is in the unfolded state, quickly rotates to reset and retracts. When the rotating rod 12 resets and rotates, the clamping rod 13 clamps the overhead power line 2 that has fallen onto the circular receiving surface, thus preventing the overhead power line 2 from slipping off the receiving surface after it falls onto the circular receiving surface.

[0037] By installing multiple rotatable rods 12 on the outer casing 1 and mounting the protective device on the railway track vehicle 3, when the protective device needs to be installed, the railway track vehicle 3 moves to the designated position, and then the rotating rods 12 rotate and unfold, forming a circular receiving surface. This improves the efficiency of installing the protective device and reduces the workload. Simultaneously, when the overhead power line 2 falls onto the circular receiving surface, pressure sensors on the fixed rod 11 and the rotating rod 12 detect the pressure. The rotating rod 12 then quickly returns to its original position and retracts. The clamping rod 13 at the end of the rotating rod 12 clamps the overhead power line 2 that has fallen onto the circular receiving surface, preventing it from slipping off the protective device. In summary, this invention improves the installation speed of the protective device, reduces the workload, and prevents the overhead power line 2 from slipping off the protective device, ensuring the safety of the area around the railway line.

[0038] Reference Figure 3 and Figure 8A drive unit 15 for driving the rotating rod 12 to rotate is provided on the outer casing 1. The drive unit 15 includes a rotating disk 152 rotatably disposed on the upper part of the outer casing 1 along the axis of the outer casing 1. A drive rod 151 fixedly connected to the upper part of the rotating disk 152 and the rotating rod 12 is fixedly disposed between the upper part of the rotating disk 152 and the rotating rod 12. A rotary driver 153 for driving the rotating disk 152 to rotate is provided on the lower part of the rotating disk 152.

[0039] Reference Figure 3 A guide ring 154 is fixedly sleeved on the outer periphery of the outer shell 1. An arc-shaped groove 1541 is formed on the guide ring 154 around the axis of the guide ring 154. The end of the rotating rod 12 extends into the arc-shaped groove 1541 and slides in cooperation with the arc-shaped groove 1541.

[0040] The rotary driver 153 is preferably a servo motor. When the protective device needs to be deployed, the rotary driver 153 is activated, causing the rotating disk 152 to drive the drive rod 151 to rotate. The drive rod 151 drives the rotating rod 12 to rotate and deploy. It is worth noting that the rotating rod 12, which is fixedly connected to the drive rod 151, is adjacent to the fixed rod 11. However, no receiving net 14 is provided between the rotating rod 12 and the fixed rod 11. The arc groove 1541 on the guide ring 154 provides guidance for the rotating rod 12 when it rotates.

[0041] Reference Figures 5-8 A pre-tightening unit 16 is provided below the rotating disk 152. The pre-tightening unit 16 includes a pre-tightening ring 161 rotatably disposed below the rotating disk 152 along the axis of the outer casing 1. A connecting component 163 is provided between the pre-tightening ring 161 and the rotating disk 152. The pre-tightening ring 161 drives the rotating disk 152 to reset and rotate through the connecting component 163. A torsion spring 162 is provided below the pre-tightening ring 161 to provide reset torque for the pre-tightening ring 161. A locking unit 17 is provided on one side of the rotating disk 152 to restrict the rotation of the rotating disk 152.

[0042] Because the rotating rod 12 needs to rotate at a relatively high speed during reset, if the rotating rod 12 is driven to rotate by the rotary actuator 153 when it resets, the initial operating speed of the rotary actuator 153 needs to be high. However, after the clamping rod 13 clamps the overhead power line 2, the rotary actuator 153 may continue to run, which could lead to the overhead power line 2 being broken by the clamping rod 13. The torsion spring 162 provides torque to the preload ring 161, and a connecting spring is provided between the preload ring 161 and the rotating disk 152. When the pressure sensor is triggered by the connecting component 163, the locking unit 17 unlocks the rotating disk 152. The torsion spring 162, which is in a pre-tightened state, drives the pre-tightening ring 161 to rotate, thereby causing the rotating disk 152 to rotate. Finally, the rotating rod 12 rotates and retracts. During the rotation and retraction of the rotating rod 12, the overhead power line 2 can be clamped by the clamping rod 13. After clamping, the clamping force of the clamping rod 13 on the overhead power line 2 will not continue to increase, thus avoiding the situation where the clamping rod 13 breaks the overhead power line 2 when clamping it.

[0043] Reference Figure 10 and Figure 11 The connecting assembly 163 includes a plurality of first one-way teeth 1631 uniformly fixedly arranged around the axis of the rotating disk 152 at the lower part of the rotating disk 152, and a plurality of second one-way teeth 1632 fixedly arranged around the axis of the pretensioning ring 161 at the upper part of the pretensioning ring 161, wherein the first one-way teeth 1631 and the second one-way teeth 1632 engage in one-way meshing.

[0044] Reference Figure 6 and Figure 7 The pre-tightening unit 16 also includes a pre-tightening shell 164 with an annular structure. The pre-tightening shell 164 rotates along the axis of the outer shell 1. The pre-tightening ring 161 rotates synchronously with the pre-tightening shell 164 and is vertically slidably disposed in the pre-tightening shell 164. A spring 165 is vertically disposed between the bottom of the pre-tightening ring 161 and the bottom of the pre-tightening shell 164. The two ends of the spring 165 are fixedly connected to the bottom of the pre-tightening ring 161 and the bottom of the pre-tightening shell 164, respectively.

[0045] Reference Figure 8 A groove 1521 is vertically provided at the bottom of the rotating disk 152. A connecting shaft 1522 is vertically movable in the outer shell 1 and is inserted into the groove 1521. The horizontal cross section of the connecting shaft 1522 is a non-circular structure. The connecting shaft 1522 vertically passes through the pre-tightening shell 164 and slides in cooperation with the pre-tightening shell 164.

[0046] When the rotating rod 12 begins to unfold, the connecting shaft 1522 passes through the pre-tightening housing 164 and slides into the groove 1521. The connecting shaft 1522 and the groove 1521 are engaged. The rotary driver 153 drives the connecting shaft 1522 to rotate. The pre-tightening ring 161 rotates synchronously with the rotating disk 152, and the torsion spring 162 begins to pre-tighten. When the rotating rod 12 is fully unfolded, the rotating disk 152 stops rotating, and the locking unit 17 locks the rotating disk 152. The pre-tightening housing 164 drives the pre-tightening ring 1521 to rotate. As the rotation continues, due to the one-way engagement of the first one-way tooth 1631 and the second one-way tooth 1632, after the locking unit 17 locks the rotating disk 152, the connecting shaft 1522 descends and slides out of the groove 1521. The rotary driver 153 continues to drive the connecting shaft 1522, the preload ring 161 continues to rotate, and the torsion spring 162 is in a continuously tightened state. The second one-way tooth 1632 on the preload ring 161 engages with the first one-way tooth 1632 on the rotating disk 152. When the first one-way tooth 1631 is in a sliding tooth state, and the second one-way tooth 1632 contacts, the preload ring 161 is pressed into the preload housing 164, and the spring 165 is compressed. When the first one-way tooth 1631 and the second one-way tooth 1632 are misaligned, the spring 165 returns to its original position, and the torsion spring 162 continuously tightens. When the preload ring 161 rotates to a specified angle, the preload ring 161 stops rotating, and the first one-way tooth 1631 engages with the second one-way tooth 1632. This is achieved by the locking unit 17. When the pretensioning ring 161 is in use, it cannot push the rotating disk 152 to rotate. At this time, the connecting shaft 1522 continues to descend. The connecting shaft 1522 descends to below the pretensioning shell 164. At this time, the connecting shaft 1522 and the pretensioning shell 164 are disengaged. When the pressure sensor detects that the overhead power line 2 has fallen, the locking unit 17 is unlocked, so that the pretensioning ring 161 drives the rotating rod 12 to reset and rotate under the action of the torsion spring 162, thereby causing the clamping rod 13 to clamp the fallen overhead power line 2.

[0047] Reference Figure 8 A vertical groove 1523 is provided at the lower part of the connecting shaft 1522. A drive shaft 1524 is fixedly provided at the output end of the rotary driver 153. The drive shaft 1524 extends into the groove 1523 and slides in the groove 1523 in the vertical direction. The drive shaft 1524 rotates synchronously with the connecting shaft 1522.

[0048] By setting the drive shaft 1524 and the slide 1523, the connecting shaft 1522 can still be driven by the rotary driver 153 during the lifting and lowering process.

[0049] Reference Figure 10 and Figure 11A lifting ring 1525 is provided at the lower part of the connecting shaft 1522 in a vertical direction to support the connecting shaft 1522. The lifting ring 1525 can only move in a vertical direction and is rotatably engaged with the connecting shaft 1522. A linear actuator 1526 is provided vertically at the lower part of the lifting ring 1525 to drive the movement of the lifting ring 1525.

[0050] By setting up a lifting ring 1525, the lifting ring 1525 can drive the connecting shaft 1522 to move in the vertical direction.

[0051] Reference Figure 6 and Figure 8 The locking unit 17 includes a locking rod 171 that moves in the radial direction. The locking rod 171 is hydraulically driven. A locking groove is provided on the peripheral wall of the rotating disk 152 in the radial direction of the rotating disk 152. The locking groove is inserted into the locking rod 171.

[0052] After the rotating rod 12 is fully extended, the locking rod 171 aligns with the locking groove on the rotating disk 152. The locking rod 171 slides into the locking groove under hydraulic pressure. The locking groove and the locking rod 171 are engaged. When the pressure sensor detects pressure, the locking rod 171 slides out of the locking groove, thereby completing the unlocking.

[0053] Working principle: Before use, the railway track vehicle 3 moves to the junction of the overhead power line 2 and the railway line. Then, the rotating rods 12 set around the outer shell 1 rotate. Before rotation, the rotating rods 12 are close to each other, and the supporting net 14 between adjacent rotating rods 12 is folded. The supporting net 14 between the fixed rod 11 and its adjacent rotating rod 12 is also folded. When the rotating rods 12 rotate, the rotating rods 12 adjacent to the fixed rod 11 start to rotate first. There is no supporting net 14 between the rotating rods 12 and the fixed rod 11. Since the length of the supporting net 14 is limited, when the rotating rod 12 rotates one revolution and contacts the fixed rod 11, all the supporting nets 14 are unfolded. All the supporting nets 14 together form a circular supporting surface. The circular supporting surface can block the overhead railway line, ensuring that the overhead power line 2 will not fall into the railway line when crossing the railway line. It is worth noting that inclined clamping rods 13 are fixedly installed at the ends of both the fixed rod 11 and the rotating rod 12, and pressure sensors are installed on the upper parts of both the fixed rod 11 and the rotating rod 12. The pressure sensors are used to detect the pressure generated when the overhead power line 2 falls. When the pressure sensor detects the pressure, the rotating rod 12, which is in the unfolded state, quickly rotates to reset and retracts. When the rotating rod 12 resets and rotates, the clamping rod 13 clamps the overhead power line 2 that has fallen onto the circular receiving surface, thus preventing the overhead power line 2 from slipping off the receiving surface after it falls onto the circular receiving surface.

[0054] The specific principles of the unfolding and retraction of the rotating rod 12 are as follows: When the rotating rod 12 begins to unfold, the connecting shaft 1522 passes through the pre-tightening shell 164 and slides into the groove 1521. The connecting shaft 1522 and the groove 1521 are engaged. The rotary driver 153 drives the connecting shaft 1522 to rotate. The pre-tightening ring 161 rotates synchronously with the rotating disk 152, and the torsion spring 162 begins to pre-tighten. When the rotating rod 12 is fully unfolded, the rotating disk 152 stops rotating, and the locking unit 17 locks the rotating disk 152. Locked, the pre-tightening housing 164 drives the pre-tightening ring 161 to continue rotating. Because the first one-way tooth 1631 and the second one-way tooth 1632 engage in one direction, after the locking unit 17 locks the rotating disk 152, the connecting shaft 1522 descends and slides out of the groove 1521. The rotary driver 153 continues to drive the connecting shaft 1522, and the pre-tightening ring 161 continues to rotate. The torsion spring 162 is in a continuously tightened state. The second one-way tooth 1632 on the pre-tightening ring 161 engages with the rotating disk 162. The first one-way tooth 1631 on the 52 is in a sliding state. When the first one-way tooth 1631 contacts the second one-way tooth 1632, the preload ring 161 is pressed into the preload housing 164, and the spring 165 is compressed. When the first one-way tooth 1631 and the second one-way tooth 1632 are misaligned, the spring 165 returns to its original position. At this time, the torsion spring 162 continuously tightens. When the preload ring 161 rotates to a specified angle, the preload ring 161 stops rotating, and the first one-way tooth 1631 meshes with the second one-way tooth 1632, locking the single... Under the action of unit 17, the pre-tightening ring 161 cannot push the rotating disk 152 to rotate, and at this time the connecting shaft 1522 continues to descend. The connecting shaft 1522 descends to below the pre-tightening shell 164. At this time, the connecting shaft 1522 and the pre-tightening shell 164 are disengaged. When the pressure sensor detects that the overhead power line 2 has fallen, the locking unit 17 unlocks, so that the pre-tightening ring 161 drives the rotating rod 12 to reset and rotate under the action of the torsion spring 162, so that the clamping rod 13 clamps the fallen overhead power line 2.

[0055] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A protective device for overhead power lines crossing railway lines that is linked to a railway track vehicle, wherein the protective device is installed on the railway track vehicle (3); Its features are, The protective device includes a cylindrical outer shell (1), a fixed rod (11) is fixedly installed on the outer shell (1) along the radial direction of the outer shell (1), a plurality of rotating rods (12) are arranged on the outer shell (1) around the axis of the outer shell (1), a receiving net (14) is fixedly installed between the fixed rod (11) and one of the adjacent rotating rods (12), the receiving net (14) is a fan-shaped structure, and a receiving net (14) is also arranged between two adjacent rotating rods (12). After the rotating rod (12) is rotated and unfolded, all the receiving nets (14) form a circular receiving surface for receiving the overhead power line (2). At the ends of the rotating rods (12) away from the outer shell (1) and at the ends of the rotating rods (12) away from the outer shell (1), clamping rods (13) are fixedly installed at an incline to hold the fallen overhead power line (2). Pressure sensors are arranged on the upper part of the rotating rods (12) and the fixed rods (11).

2. The overhead power line crossing railway protection device linked to a railway track vehicle according to claim 1, characterized in that, A drive unit (15) for driving the rotating rod (12) to rotate is provided on the outer shell (1). The drive unit (15) includes a rotating disk (152) rotatably disposed on the upper part of the outer shell (1) along the axis of the outer shell (1). A drive rod (151) fixedly connected to the rotating rod (12) is fixedly disposed on the upper part of the rotating disk (152). A rotary driver (153) for driving the rotating disk (152) to rotate is provided on the lower part of the rotating disk (152).

3. The overhead power line crossing railway protection device linked to a railway track vehicle according to claim 2, characterized in that, A guide ring (154) is fixedly sleeved on the outer periphery of the outer shell (1). An arc groove (1541) is opened on the guide ring (154) around the axis of the guide ring (154). The end of the rotating rod (12) extends into the arc groove (1541) and slides in cooperation with the arc groove (1541).

4. The overhead power line crossing railway line protection device linked with a railway track vehicle according to claim 2, characterized in that, A pre-tightening unit (16) is provided below the rotating disk (152). The pre-tightening unit (16) includes a pre-tightening ring (161) rotatably disposed below the rotating disk (152) along the axis of the outer shell (1). A connecting assembly (163) is provided between the pre-tightening ring (161) and the rotating disk (152). The pre-tightening ring (161) drives the rotating disk (152) to reset and rotate through the connecting assembly (163). A torsion spring (162) is provided below the pre-tightening ring (161) to provide reset torque for the pre-tightening ring (161). A locking unit (17) is provided on one side of the rotating disk (152) to restrict the rotation of the rotating disk (152).

5. The overhead power line crossing railway line protection device linked with a railway track vehicle according to claim 4, characterized in that, The connecting assembly (163) includes a plurality of first one-way teeth (1631) uniformly fixedly arranged around the axis of the rotating disk (152) at the lower part of the rotating disk (152), and a plurality of second one-way teeth (1632) fixedly arranged around the axis of the pretensioning ring (161) at the upper part of the pretensioning ring (161), and the first one-way teeth (1631) and the second one-way teeth (1632) mesh in one direction.

6. The overhead power line crossing railway line protection device linked with a railway track vehicle according to claim 5, characterized in that, The pre-tightening unit (16) also includes a pre-tightening shell (164) with an annular structure. The pre-tightening shell (164) rotates along the axis of the outer shell (1). The pre-tightening ring (161) rotates synchronously with the pre-tightening shell (164). The pre-tightening ring (161) is vertically slidably disposed in the pre-tightening shell (164). A spring (165) is vertically disposed between the bottom of the pre-tightening ring (161) and the bottom of the pre-tightening shell (164). The two ends of the spring (165) are fixedly connected to the bottom of the pre-tightening ring (161) and the bottom of the pre-tightening shell (164), respectively.

7. The overhead power line crossing railway protection device linked to a railway track vehicle according to claim 6, characterized in that, A groove (1521) is vertically provided at the bottom of the rotating disk (152). A connecting shaft (1522) is vertically movable in the outer shell (1) and is inserted into the groove (1521). The horizontal cross section of the connecting shaft (1522) is a non-circular structure. The connecting shaft (1522) vertically passes through the pre-tightening shell (164) and slides with the pre-tightening shell (164).

8. The overhead power line crossing railway protection device linked to a railway track vehicle according to claim 7, characterized in that, A vertical groove (1523) is provided at the lower part of the connecting shaft (1522), and a drive shaft (1524) is fixedly provided at the output end of the rotary driver (153). The drive shaft (1524) extends into the groove (1523) and slides in the groove (1523) in the vertical direction. The drive shaft (1524) rotates synchronously with the connecting shaft (1522).

9. The overhead power line crossing railway line protection device linked with a railway track vehicle according to claim 7, characterized in that, A lifting ring (1525) is provided at the lower part of the connecting shaft (1522) in a vertical direction to support the connecting shaft (1522). The lifting ring (1525) can only move in a vertical direction. The lifting ring (1525) rotates with the connecting shaft (1522). A linear actuator (1526) is provided vertically at the lower part of the lifting ring (1525) to drive the movement of the lifting ring (1525).

10. The overhead power line crossing railway protection device linked to a railway track vehicle according to claim 4, characterized in that, The locking unit (17) includes a locking rod (171) that moves in the radial direction. The locking rod (171) is hydraulically driven and has a locking groove on the peripheral wall of the rotating disk (152) in the radial direction. The locking groove is inserted into the locking rod (171).

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